In the Linux kernel, the following vulnerability has been resolved:
drm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read
In commit e11f5bd8228f ("drm: Add support for DP 1.4 Compliance edid
corruption test") the function connector_bad_edid() started assuming
that the memory for the EDID passed to it was big enough to hold
`edid[0x7e] + 1` blocks of data (1 extra for the base block). It
completely ignored the fact that the function was passed `num_blocks`
which indicated how much memory had been allocated for the EDID.
Let's fix this by adding a bounds check.
This is important for handling the case where there's an error in the
first block of the EDID. In that case we will call
connector_bad_edid() without having re-allocated memory based on
`edid[0x7e]`.
References
Configurations
Configuration 1 (hide)
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History
25 Sep 2025, 16:01
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/09f3946bb452918dbfb1982add56f9ffaae393dc - Patch | |
| References | () https://git.kernel.org/stable/c/97794170b696856483f74b47bfb6049780d2d3a0 - Patch | |
| References | () https://git.kernel.org/stable/c/a7b45024f66f9ec769e8dbb1a51ae83cd05929c7 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
Information
Published : 2024-05-22 07:15
Updated : 2025-09-25 16:01
NVD link : CVE-2021-47444
Mitre link : CVE-2021-47444
CVE.ORG link : CVE-2021-47444
JSON object : View
Products Affected
linux
- linux_kernel
CWE